A5004541114- Graphene research and applications
- Fullerene Chemistry and Applications
- Advancements in Battery Materials
- Boron and Carbon Nanomaterials Research
- Hydrogen Storage and Materials
- X-ray Diffraction in Crystallography
- Advanced Battery Materials and Technologies
- Crystallization and Solubility Studies
- Organic and Molecular Conductors Research
- Supercapacitor Materials and Fabrication
- Rare-earth and actinide compounds
- Crystallography and molecular interactions
- High-pressure geophysics and materials
- Molecular Junctions and Nanostructures
- Muon and positron interactions and applications
- Inorganic Chemistry and Materials
- Diamond and Carbon-based Materials Research
- Electrochemical sensors and biosensors
- Graphite, nuclear technology, radiation studies
- Iron-based superconductors research
- Quantum and electron transport phenomena
- Carbon Nanotubes in Composites
- Innovative concrete reinforcement materials
- Nanocluster Synthesis and Applications
- Physics of Superconductivity and Magnetism
University of Parma
2015-2024
National Interuniversity Consortium of Materials Science and Technology
2023
National Interuniversity Consortium for the Physical Sciences of Matter
2007-2017
Terra
2015-2016
Telecom Italia Lab
2014
University of Manchester
2010
Engineering and Physical Sciences Research Council
2010
University of Bologna
2010
ETH Zurich
2010
Institut Laue-Langevin
2010
Far and mid infrared optical pulses have been shown to induce non-equilibrium unconventional orders in complex materials, including photo-induced ferroelectricity quantum paraelectrics, magnetic polarization antiferromagnets transient superconducting correlations the normal state of cuprates organic conductors. In case superconductivity, femtosecond drives generally resulted electronic properties that disappear immediately after excitation, evidencing a lacks intrinsic rigidity. Here, we...
Abstract Physisorption of hydrogen in nanoporous materials offers an efficient and competitive alternative for storage. At low temperatures (e.g. 77 K) moderate pressures (below 100 bar) molecular H 2 adsorbs reversibly, with very fast kinetics, at high density on the inner surfaces such as zeolites, activated carbons metal–organic frameworks (MOFs). This review, by experts Task 40 ‘Energy Storage Conversion based Hydrogen’ Hydrogen Technology Collaboration Programme International Energy...
Abstract Photo-excitation at terahertz and mid-infrared frequencies has emerged as an effective way to manipulate functionalities in quantum materials, some cases creating non-equilibrium phases that have no equilibrium analogue. In K 3 C 60 , a metastable zero-resistance phase was observed optical properties, nonlinear electrical transport pressure dependencies compatible with high-temperature superconductivity. Here we demonstrate two-orders-of-magnitude increase photo-susceptibility near...
Graphene obtained from thermal exfoliation of graphite oxide was chemically functionalized with nickel nanoparticles (NPs) without exposing the system to oxidizing agents. Its structural, physical and chemical properties have been studied by means TEM, X-ray photoelectron Raman spectroscopies, SQuID magnetometry. The formation 17 nm super-paramagnetic (SPM) monodispersed Ni NPs observed. Nitrogen sorption experiments at 77 K yield a Brunauer–Emmet–Teller specific surface area (BET-SSA) 505...
Abstract The performance of graphene, and a few selected derivatives, was investigated as negative electrode material in sodium‐ lithium‐ion batteries. Hydrogenated graphene shows significant improvement battery compared with as‐prepared reversible capacities 488 mA h g −1 for batteries after 50 cycles 491 sodium‐ion 20 cycles. Notably, high rates 1 A 5 hydrogenated indicate higher than Alternatively, nickel‐nanoparticle‐decorated performed relatively poorly However, they showed the highest...
Here, we present the first muon spectroscopy investigation of graphene, focused on chemically produced, gram-scale samples, appropriate to large penetration depth. We have observed an evident spin precession, usually fingerprint magnetic order, but here demonstrated originate from muon-hydrogen nuclear dipolar interactions. This is attributed formation CHMu (analogous CH(2)) groups, stable up 1250 K where signal still persists. The relatively amplitude demonstrates extraordinary hydrogen...
We report on a systematic temperature-dependent x-band electron paramagnetic resonance (EPR) study of nanosized graphite particles prepared by ball milling. In as-prepared samples very intense and sharp EPR at $g=2.0035$ has been measured. The line width shows Korringa-like linear temperature dependence arising due to the coexistence strong exchange coupling itinerant localized edge states. With prolonged aging in inert atmosphere, changes signal suggest gradual structural reconstruction...
The lithium-intercalated fulleride Li12C60 was investigated in view of a lightweight hydrogen storage material due to the low molecular weight its constituents. Deuterium (D2) absorption shows an uptake up 9.5 mass % D2 (equivalent ∼5 H2 for same stoichiometry). Under pressure 190 bar onset observed at temperature below 100 °C, which is 200 °C lower than that pure C60. desorption by in-situ neutron powder diffraction, and 1 above 300 °C. ab/desorption accompanied partial de/reintercalation...
Single-walled carbon nanotubes (SWCNTs) possessing a confined inner space protected by chemically resistant shells are promising for delivery, storage, and desorption of various compounds, as well carrying out specific reactions. Here, we show that SWCNTs interact with molten mercury dichloride (HgCl2) guide its transformation into dimercury (Hg2Cl2) in the cavity. The chemical state host remains almost unchanged except small p-doping from guest Hg2Cl2 nanocrystals. density functional theory...
All known fullerene polymers have interfullerene connections via either [2 + 2] cycloaddition or single C−C bonds. The high-resolution synchrotron X-ray powder diffraction technique was employed here to determine the crystal structure of Li4C60 fulleride. We find that ground state is a two-dimensional polymer with monoclinic symmetry and an unprecedented architecture, combining both bridging motifs. small size Li+ cations crucial in stabilizing resulting tightly packed polymeric structure.
We report on the extraordinary superionic conductivity in fulleride polymer Li4C60, a crystalline material with no disorder. 7Li, NMR, and dc frequency dependent show uncorrelated ionic hopping across small energy barriers (DeltaE_{a} approximately 200 meV) an of 10;{-2} S/cm at room temperature, higher than "standard" conductors. Ab initio calculations molecular structure find intrinsic unoccupied interstitial sites that can be filled by Li+ cations stoichiometric Li4C60 even low...
We report a NMR and magnetometry study on the expanded intercalated fulleride Cs3C60 in both its A15 face centered cubic structures. allowed us to evidence that exhibit first-order Mott transition superconducting state, occurring at distinct critical pressures p{c} temperatures T{c}. Though ground state magnetism of phases differs, their high T paramagnetic properties are found similar, phase diagrams versus unit volume per C60 superimposed. Thus, as expected for strongly correlated system,...
In the substantia nigra of human brain, neuromelanin (NM) released by degenerating neurons can activate microglia with consequent neurodegeneration, typical Parkinson's disease (PD). Synthetic analogues NM were prepared to develop a PD model reproducing neuropathological conditions disease. Soluble melanin–protein conjugates obtained melanization fibrillated β-lactoglobulin (fLG). The melanic portion contains either eumelanic (EufLG) or mixed eumelanic/pheomelanic composition (PheofLG),...